SIMPLE PRESENT
Affirmative
- I decertify
- you decertify
- she/he/it decertifies
- we decertify
- you decertify
- they decertify
Negative
- I do not decertify
- you do not decertify
- she/he/it does not decertify
- we do not decertify
- you do not decertify
- they do not decertify
Interrogative
- do I decertify ?
- do you decertify ?
- does she/he/it decertify ?
- do we decertify ?
- do you decertify ?
- do they decertify ?
Negative - Interrogative
- do I not decertify ?
- do you not decertify ?
- does she/he/it not decertify ?
- do we not decertify ?
- do you not decertify ?
- do they not decertify ?
PRESENT CONTINUOUS
Affirmative
- I am decertifying
- you are decertifying
- she/he/it is decertifying
- we are decertifying
- you are decertifying
- they are decertifying
Negative
- I am not decertifying
- you are not decertifying
- she/he/it is not decertifying
- we are not decertifying
- you are not decertifying
- they are not decertifying
Interrogative
- am I decertifying ?
- are you decertifying ?
- is she/he/it decertifying ?
- are we decertifying ?
- are you decertifying ?
- are they decertifying ?
Negative - Interrogative
- am I not decertifying ?
- are you not decertifying ?
- is she/he/it not decertifying ?
- are we not decertifying ?
- are you not decertifying ?
- are they not decertifying ?
SIMPLE PAST
Affirmative
- I decertified
- you decertified
- she/he/it decertified
- we decertified
- you decertified
- they decertified
Negative
- I did not decertify
- you did not decertify
- she/he/it did not decertify
- we did not decertify
- you did not decertify
- they did not decertify
Interrogative
- did I decertify ?
- did you decertify ?
- did she/he/it decertify ?
- did we decertify ?
- did you decertify ?
- did they decertify ?
Negative - Interrogative
- did I not decertify ?
- did you not decertify ?
- did she/he/it not decertify ?
- did we not decertify ?
- did you not decertify ?
- did they not decertify ?
PRESENT PERFECT
Affirmative
- I have decertified
- you have decertified
- she/he/it has decertified
- we have decertified
- you have decertified
- they have decertified
Negative
- I have not decertified
- you have not decertified
- she/he/it has not decertified
- we have not decertified
- you have not decertified
- they have not decertified
Interrogative
- have I decertified ?
- have you decertified ?
- has she/he/it decertified ?
- have we decertified ?
- have you decertified ?
- have they decertified ?
Negative - Interrogative
- have I not decertified ?
- have you not decertified ?
- has she/he/it not decertified ?
- have we not decertified ?
- have you not decertified ?
- have they not decertified ?
PAST CONTINUOUS
Affirmative
- I was decertifying
- you were decertifying
- she/he/it was decertifying
- we were decertifying
- you were decertifying
- they were decertifying
Negative
- I was not decertifying
- you were not decertifying
- she/he/it was not decertifying
- you were not decertifying
- you were not decertifying
- they were not decertifying
Interrogative
- was I decertifying ?
- were you decertifying ?
- was she/he/it decertifying ?
- were we decertifying ?
- were you decertifying ?
- were they decertifying ?
Negative - Interrogative
- was I not decertifying ?
- were you not decertifying ?
- was she/he/it not decertifying ?
- were we not decertifying ?
- were you not decertifying ?
- were they not decertifying ?
PRESENT PERFECT CONTINUOUS
Affirmative
- I have been decertifying
- you have been decertifying
- she/he/it has been decertifying
- we have been decertifying
- you have been decertifying
- they have been decertifying
Negative
- I have not been decertifying
- you have not been decertifying
- she/he/it has not been decertifying
- we have not been decertifying
- you have not been decertifying
- they have not been decertifying
Interrogative
- have I been decertifying ?
- have you been decertifying ?
- has she/he/it been decertifying ?
- have we been decertifying ?
- have you been decertifying ?
- have they been decertifying ?
Negative - Interrogative
- have I not been decertifying ?
- have you not been decertifying ?
- has she/he/it not been decertifying ?
- have we not been decertifying ?
- have you not been decertifying ?
- have they not been decertifying ?
PAST PERFECT
Affirmative
- I had decertified
- you had decertified
- she/he/it had decertified
- we had decertified
- you had decertified
- they had decertified
Negative
- I had not decertified
- you had not decertified
- she/he/it had not decertified
- we had not decertified
- you had not decertified
- they had not decertified
Interrogative
- had I decertified ?
- had you decertified ?
- had she/he/it decertified ?
- had we decertified ?
- had you decertified ?
- had they decertified ?
Negative - Interrogative
- had I not decertified ?
- had you not decertified ?
- had she/he/it not decertified ?
- had we not decertified ?
- had you not decertified ?
- had they not decertified ?
PAST PERFECT CONTINUOUS
Affirmative
- I had been decertifying
- you had been decertifying
- she/he/it had been decertifying
- we had been decertifying
- you had been decertifying
- they had been decertifying
Negative
- I had not been decertifying
- you had not been decertifying
- she/he/it had not been decertifying
- we had not been decertifying
- you had not been decertifying
- they had not been decertifying
Interrogative
- had I been decertifying ?
- had you been decertifying ?
- had she/he/it been decertifying ?
- had we been decertifying ?
- had you been decertifying ?
- had they been decertifying ?
Negative - Interrogative
- had I not been decertifying ?
- had you not been decertifying ?
- had she/he/it not been decertifying ?
- had we not been decertifying ?
- had you not been decertifying ?
- had they not been decertifying ?